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      Navigation menu
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       <a href='http://libnoise.sourceforge.net/index.html'>Main</a>
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       <a href='http://libnoise.sourceforge.net/downloads/index.html'>Downloads</a>
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       <a href='http://libnoise.sourceforge.net/coherentnoise/index.html'>What is coherent noise?</a>
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       <a href='http://libnoise.sourceforge.net/noisegen/index.html'>Generating coherent noise</a>
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       <a href='http://libnoise.sourceforge.net/glossary/index.html'>Glossary</a>
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       <a href='http://libnoise.sourceforge.net/examples/index.html'>Examples</a>
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         <a href='http://libnoise.sourceforge.net/examples/textures/index.html'>Procedural textures</a>
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         <a href='http://libnoise.sourceforge.net/examples/complexplanet/index.html'>Complex planetary surface</a>
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         <a href='http://libnoise.sourceforge.net/examples/worms/index.html'>Perlin worms</a>
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       <strong>Docs</strong>
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       <a href='tutorials/index.html'>Tutorials</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial1.html'>Tutorial 1</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial2.html'>Tutorial 2</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial3.html'>Tutorial 3</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial4.html'>Tutorial 4</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial5.html'>Tutorial 5</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial6.html'>Tutorial 6</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial7.html'>Tutorial 7</a>
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         <a href='http://libnoise.sourceforge.net/tutorials/tutorial8.html'>Tutorial 8</a>
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     <p>
      <img src='libnoise.png' alt='libnoise logo'>
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     <p>
      A portable, open-source, coherent noise-generating library for C++
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